Circular knitting machine



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BY HIS ATTORNEYS May 7, 1935. H. SWINGLEHURST, JR

CI-RCULAR KNITTING MACHINE Filed March 25, 1933 IIIIIIII IIII. I I

y 1935- H. SWINGLEHURST, JR 2,000,798

CIRCULAR KNITTING MACHINE Filed March 25, 1935 6 Sheets-Sheet 2 INVENTOR HARRY SWINGLEHURST, JR.

' BY HIS ATTORNEYS 6 s a m m 0 S d 6 0 E N \A B RT m EH mum ,1 0 m .0 mm AMQ\\\T w R JU w A B B RR. 1 5; x B

May 7,1935. H s INGLEHURST, JR

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CIRCULAR KNITTING MACHINE 6 Sheets-Shet 4 Filed March 25 1935 lillklliLlb-l lllllllll lll l|| l .l l I.

lllllllllll PlllllI-llllllllllllllll y H. SWINGLEHURST. JR

CIRCULAR KNITTING MACHINE Filed March 25, 1933 INVENTOR HARRY SWINGLEHURST, JR.

BY HIS ATTORNEYS MMM 6 Sheets-Sheet 5 May 7, 1935. H. SWINGLEHURST. JR 2,000,798

CIRCULAR KNITTING MACHINE Filed March 25, 1933 6 Sheets-Sheet 6 I l I INVENTOR HARRY SWINGLEHURST, JR.

BY HIS ATTORNEYS Patented May 7, 1935 CIRCULAR KNITTING MACHINE Harry Swinglehurst, Jr., Floral Park, N. Y., as-

signor to Scott 8; Williams, Incorporated, New York, N. Y., a corporation of Massachusetts Application March 25, 1933, Serial No. 662,733

18 Claims.

This invention relates to circular knitting machines and more particularly to circular knitting machines having wrap or embroidery yarns for pattern purposes.

In machines adapted to make embroidery or wrap patterns it is frequently desirable that the machine be able to make the body of the fabric of plated work, and in this case a more satisfactory fabric is produced it only one yam is knit in with the embroidery yarn. It is also desirable that the needles be selected individually and that the machine be able to make not only wrap patterns but also float patterns with great flexibility of pattern.

One of the objects of this invention is to produce a machine having great flexibility of selection as between wrapped stitches, plated stitches and float stitches, and which at the same time can float the plating yarn when making a wrap 20 stitch. Another object of the invention is to be able to float or plate on needles within a wrapped group. This permits the formation of a wrapped hollow figure whose center can either be the color of the fabric outside the figure or the color 25 of the body yarn. I

The invention will be shown and described embodied in the well-known Scott & Williams revolvingneedle cylinder hosiery machine. The general construction oi the machine is shownin 30 the patent to Robert W. Scott No. 1,152,850, dated September 7, 1915, and the patent to Ivan W. Grothey No. 1,678,385, dated July 24, 1928.- The wrap mechanism forms the subject-matter oi. the applications of William N.Taggart Serial No. 404,024, filed November 1, 1929, Serial No. 560,153, filed August 29, 1931, and Serial No. 707,976, filed January 23, 1934.

In the drawings, f

Fig. l is an elevation from the right front or the machine, of the needles, jacks and the cams which operate them, of a circular knitting machine of theScott 8: Williams type of revolving needle cylinder hosiery machine embodying the invention; the letters P, Q. R and S indicating similar groups of needles at diilerent points in the process, and the vertical. arrow at the upper right-hand corner of the figure indicating the knitting point.

Figs. 2 to 5, inclusive, are elevations of the ted lines the various paths taken by the operating butts of the jacks according to the desired manipulations of the needles, the arrows indicating the direction of movement of the jacks; Fig. 2 showing the path when the needle is to two pattern jack raising cams showing in dot-.

wrap and then float one body yarn; Fig. 3 showing the path when the needle is. to wrap and plate; Fig. 4 showing the path when the needle is to plate but not wrap; Fig. 5 showing the path when the needle is not to wrap and is to take 5 only one body yarn.

Figs. 6 to 11, inclusive, are side elevations of the pattern jacks and the secondary selecting cams after the wrapping point, showing the relative positions under different conditions; Fig. 6 10 showing a pattern Jack whose needle has been wrapped being selected to float one body yarn; Fig. 7 showing a pattern jack whose needle has been wrapped and is ready to plate; Fig. 8 showing a pattern jack difierent from that of Fig. 6, whose needle has been wrapped and is to float one body yarn; Fig. 9 showing a pattern jack which did not wrap and is to float one body yarn; Fig. 10 showing a pattern jack different from Fig.

9, which did not wrap and is to fioat one body yarn; Fig. 11 showing a pattern jack which did not wrap and is to plate.

Fig. 12 is a vertical section through one side of the needle cylinder just before the primary or wrapping selection point on the line i2-l2 of Fig. 1.

Fig. 13 is a section similar to Fig. I! showing the jacks just prior to the resetting'cam for the secondary selection point, the needle in solid lines being at the bottom of the special raising cam I25 and the needle in dotted lines being at the top, all on the line "-43 of Fig. 1.

Fig. 14 is a section similar to Figs. 12 and 13 but showing only a pattern jack being reset, just prior to the secondary selection point, theview being taken on the line I 4-] l 01' Fig. 1. s

Fig. 15 is'a section similar to Figs. 12 and 13, showing jacks unselected and selected at the second pattern jack raising cam.

Fig. 16 is a perspective'view oi the leading stitch cam onthe upper bedplate and means for retracting same.

Fig. 17 is an-elevation from the front of the.

machine showing the jack selecting cams at the first selection point, the various resetting cams 5 and the pattern jack raising cams on the lower bedplate- I Fig. 18 is a plan view of the lower bedplate, taken below the various resetting cams and on the line I8-l8 of Fig. 17;the curved arrow in the center of the cylinder indicating the direction of movement of the needles and the straight arrow pointing toward the center indicating the knitting point. Fig. 19 is a view similar to Fig. 18 but taken above the resetting cams and on the line I9--I9 of Fig. 1'7; while Fig. 20 is a plan view on an enlarged scale, of the cams H3, H4, H5 of Fig. 18 with the cams I02 and I03 removed.

In the example shown in the drawings, the machine has the usual revolving needle cylinder 260, with its independent needles N and pattern selecting jacks 136 a, b, c and 01, each associated with one needle in the same cylinder slot, these pattern jacks having their own cam system. There are short pusher jacks I32 between the pattern jacks and the needles. These pattern jacks may be of any desired kind and may be selected by any desired selecting means, but they are shown in the drawings as jacks similar to those in the patent to Ivan W. Grothey No.

1,678,385, dated July 24, 1928, as selected by the mechanism in that patent. Except for the mechanism for manipulating the jacks and needles, the machine resembles very closely that of U. S.

Patent Number 1,906,204, dated April 25, 1933,

to Albert E. Page and Harry Swinglehurst, Jr. and the application of William N. Taggart Serial No. 560,153, filed August 29, 1931, already referred to. The main or body yarn and the plating yarn are fed from the usual throat plate 560 by yarn fingers F and F the body yarn being fed from the right hand finger F as you face the front of the machine, and the plating yarn from a finger F at the left of the throat plate. To aid in the separation of the yarns, the plating yarn is fed through the finger F from a higher level than F either by raising the finger or by feedingfrom some point other than the bottom of the finger. As shown in Fig. 1, it is possible by this separation to cause certain needles to take the body yarn only and other needles to take boththe body and plating yarns. This arrangement of cams and needle paths is similar to that shown in the above-mentioned Grothey Patent No. 1,678,385.

The wrap yarns are fed in the manner shown in the above-mentioned patent of Page and Swinglehurst 1,906,204, the needles of the wrap yarns being raised by a special cam I25 in ad- 'vance of the leading stitch cam 30I at the knitting point and then lowered again by a special lowering cam I26 before the regular clearing cam is reached. The regular clearing cam 36I is retractable and during the making of patterned fabric including fioat and wrap stitches that clearing cam is retracted out of operative relation with the butts on the needles and the needles are raised by the jacks to take the body and/or plating yarn. The mechanism for retracting the clearing cam for this purpose is shown in Fig. 16. The movement is obtained from a cam surface on the main pattern drum (not shown) bya thrust rod 460 linked to a bell crank level 459 which latter is pivoted on the yarn finger bracket III. This bell crank lever is in turn connected to an arm 458 adapted to retract the clearing cam bracket 310 when the thrust rod 460 rides onto a cam on the main pattern drum. To clear the needles during patterning there is a special clearing cam and a draw down cam located just prior to the raising of needles for wrapping (Fig. 1)

ing of jacks to determine whether theneedle is to plate or fioat the plating yarn is done after the wrapping operation has been completed. The separating of the jacks for the needles which are to float and the needles which are to plate is determined by auxiliary butts I25, I26 on the pattern jacks acted on by the two cams I02 and I03. The jacks, the mechanism for selecting them and the cams for raising and lowering them will now be described. The raising of a pattern jack raises a pusher jack I32 in the same slot and the pusher jack acts on the needle. The pattern jack is located below the upper bedplate B.

As in the case of the Grothey Patent 1,678,385, the pattern jacks are adapted to rock at a point I28 (Fig. 7) intermediate their ends,,their lower ends being rocked outwardly in order that a selection may be made by the vertically movable selectorarm I50 pushing in the jacks which are not to raise their needles. It therefore is necessary to rock the lower ends of all the jacks outwardly before reaching the selector arm, and a lever cam I00 is provided for this purpose opposite the resetting butts I30 at the upper ends of the jacks.

selector arm also pivots. The movements of the pushout cam I00 into and out ofoperative position are governed by the main pattern drum (not shown) through the medium of a thrust rod I08, as will be described later. The rocking of the lower end of a pattern jack outwardly brings all the pattern butts I39 on the jack radially outward. In this position the vertically movable selector arm is adapted to select the jacks having butts at the level opposite the cam. Such butts on the pattern jacks as are not needed are of course removed. The mechanism of the machine is so arranged that if it is desired to wrap on a needle. the lower end of the jack corresponding to that needle should remain in its outward position. In order that this may occur, the butt at the level where the selector arm is located on the revolution where the wrap stitch is desired, is removed from the jack, thus leaving the lower end of the jack extending outwardly in the position given it by the first pushout cam I00. When the lower end of the jack is left out in this position, the continued revolution of the needle cylinder brings it into contact with the raising cam I I3 located just prior to the wrapping point, which raises the jacks thus selected. As they are raised the short pusher jacks I32 above them are also raised and those pusher jacks rise until they contact with the needles and raise them-above the level of the remaining needles where the special raising cam I25 can elevate them further till the wrapping yarns can be laid around those raised needles. The jacks which are selected out of the wrap pattern by engagement between their butts 1.39 and the selector arm'150 have their lower ends rocked radially inward so that they.

pass inside the cam II 3 rather than ride up its face (see the second jack in Fig. 12). Thus these needles are not raised at the wrapping point and do not take anywrapping yarn.

When selected the pattern jack and the pusher jack do not raise their needles all the way to the wrapping level but merely push them up until they engage the special raising cam I25 which continues the upward movement and leaves the jacks behind (see Fig. 1). I The needles thus raised to the wrapping point have the wrapping yarn laid around them by wrapping fingers such The lever cam I00 ispivotally mounted on a vertical pin 82I on which the as shown in the above-mentioned patent of Page and Swinglehurst No. 1,906,204. Then they con-' tact with a lowering cam I 26 which lowers the needles almost back to the so-called normal level, at which they were moving before they were raised.

As soon as the jacks for the wrapping needles have ridden oif the raising surface of the cam I I3 they are pushed down by the butts of their pusher Jacks I32 which are riding down the lower edge I3I of a cam ring I30 whose upper edge controls the needles. This leaves the jacks which went up the raising cam H3 about one half an inch above the normal level where the non-wrap jacks are located. The lower ends of the wrap jacks are still in outward position radially.

The needles which are to take both body yarns must be raised, and for this purpose a second jack raising cam H5 is provided adjacent the first jack raising cam I I3. The two raising cams must be so close together to get themin before the knitting point that they overlap (see Fig. 1). This cam, like cam I I3, allows jack butts which are not pressed out to pass between it and the cylinder.

In order to make the second selection it is necessary of course to have the lower ends of all the jacks pushed out. The jacks which are associated with needles that were raised to wrap still have their lower ends .out. The other jacks now have their lower ends pivoted out by. a pushout cam IOI positioned at the same level as the first pushout cam I so as to lie in the,path of the resetting butts I38 of the jacks which were not selected for wrapping.

The upper ends of the jacks are hollowed out a short distance below their upper ends, this notch I35 being so located that lacks which are being pushed down by the lower edge I3I of cam ring. I30 present their notch to the cam IN.

This second resetting cam IOI has, and the selecting means have, to be crowded in between a point above the crest of the first jack raising cam I I3 and a point above that part of the raising-slope oi cam H5 which is below the bottom of the jack operating butts before they are raised.

The resetting cam IOI istherefore put above the back slope of the first raising cam H3 and the back of the cam .I I3 is cut out as shown by the dotted lines I52 in Fig. 1 in order that the lower ends of the jacks may be projected outwardly.

After the raised jacks pass beyond the highest part of the first jack raising cam H3, they come opposite a guard arm III provided on the back slope of the cam I I8 to prevent the lower ends of the jacks coming out far enough to jam on cam H5.

The resetting cam I00 just ahead of the wrap selecting cam I50 and the second resetting cam IOI are linked up and controlled from the main pattern drum in order that they may be thrown out of action when patterning is not desired. For this purpose the cam I 00 is pivotally mounted on the vertical rod 82I, as already mentioned, and the cam IN is pivotally mounted on a pin 822 depending from the upperbedplate B (see Fig. 17). The resetting cam I 00 is in a position such that it will cause resetting of jacks when there is a cam on the main pattern drum pushing the resetting cam I 00 radially inward. This movement is accomplished by a thrustrod I08 bevelled at its upper end so that when it is raised itpushes away a lever I09. This lever is connected to the first resetting cam I00 and swings the cam into action when the lever is moved away. This same lever I 09 is connected to the second resetting cam I M by another lever I I0, and movements of the cam IOI occur simultaneously with similar movements of the first resetting cam I00.

Separate butts are needed on the jacks in order to make the second selection. These are located above the primary selection butts. In the drawings we have marked them with the reference letters I and I28.

These butt positions are located just below the rocking point I28 of the jacks so that when a butt is pressed inwardly by a cam the lower end of the jack is pushed out of line with the cam H5 and therefore is not raised to plate. The jacks which were not raised for wrapping are reset by cam IOI and all the jacks are therefore available for selection without regard to whether or not position vertically. These two cams I02 and I03- are about half an inch apart, the top cam I02 acting on the butts I25 of the jacks which were raised for wrapping, and the lower cam I03 acting on the butts "I28 of the jacks which were not raised for wrapping. While the butts are side by side the cams I02 and I 03 are separated because one acts on jacks which have not been raised and the other acts on jacks which were raised and have only'been returned to one-half an inch above normal level. It follows of course that on no jack can there be butts opposite both cams I02 and I03 simultaneously. If there is a butt opposite one of these cams I02, I03, the jack will be pressed inwardly, will not ride up the second jack raising cam H5, and the needle will therefore take only one yarn and produce a half float stitch. The second jack raising cam H5 will raise the needle sufilciently high to take a yarn from the left hand yarn finger F as well as from the right hand yarn finger F. In order that the needles may be managed in this manner, the leading stitch cam or clearing cam 36I is retracted from operative position during the making of the pattern. The mechanism for retracting the cam in this manner is shown in Fig. 16.

For the sake of clarity, in Fig. 1 of the drawings the different kinds of jacks andtheir corresponding needles have been illustrated differently. The butts of the jacks having no auxiliary butts are shown merely in outline and the jacks having lower auxiliary butts are shown with their butts diagonally half black and half white, the lower right half being black. Their corresponding needles also have their butts similarly shown. The jacks having both auxiliary butts are shown with both butts entirely black, and the corresponding needles have their complete length. shown in black. By observing these differences it will be possible to follow the path of any particular jack, Fig. 1 showing each kind of jack when selected for wrapping and when not selected for wrapping, so that all possible paths can be seen. The

needles and jacks in this figure are divided into plate, two jacks which will plate only if not selected for wrapping, two jacks which will not plate unless selected for wrapping, and two jacks which will plate only if not selected for wrapping.

Jacks 136a without any auxiliary butts cannot float the plating yarn and jacks 13Gb having upper auxiliary butts cannot float the plating yarn without wrapping. The jacks I360 with the lower butts only can wrap and plate. The

jacks 136d with both auxiliary butts can wrap and float or can merely float without taking the wrap yarn. The jacks with the upper auxiliary butts but no lower auxiliary butts can wrap and float or plate without wrapping.

It is sometimes desirable to interrupt the patterning in certain wales intermittently to alter the design, or to stop the patterning entirely when making the sole of the stocking. For this purpose a finger ISO is mounted on the lower bedplate B pivoting almost directly in front of the vertical pi-n 82I which carries the regular reader finger I (see Figs. 1, 17 and 18). This finger IE0 is opposite the lowest row of patterns selecting butts on the pattern jacks. When the finger I50 is pressed radially inward, it pushes all the jacks out of'operative position and thus wrapping is prevented on those needles. This lever ISO is operated from cams on the end of the main pattern drum (not shown) by means of a lever IBI connected to a vertical rod I62 (Fig. 17) and reader arm (not shown), which reader arm is operated by the cams on the end of the pattern drum. This special jack reading cam I is limited in its movement away from the butts I39 on the jacks andthe regular reader arm I50 is held in operative relation with respect thereto by means of a vertical post I63 (Fig. 17).

After the jacks have passed the high point of the jack raising cam I I 5, those jacks which were raised are lowered again by the surface I32 of the cam ring I30 and then the lower ends of all the jacks are pushed radially inward by a retracting cam I43 acting on the lower ends of the jacks. The jacks remain with their lower ends in this inward position until they reach the first resetting cam I00 on the next revolution.

The construction of the machine having been described, its operation will now be set forth.

, Assuming that the knitting has reached a point where patterning is desired, a cam on the main pattern drum will raise the thrust rod I08, thus bringing into action resetting cams I00 and IOI. Simultaneously a cam on the main pattern drum will raise the thrust rod 450 and retract the leading stitch cam 30I sothatit will not raise the needles to take the plating yarn coming from the finger F At the same time the arm I50 will begin its vertical movement by means of the mechanism set forth in the Grothey Patent 1,078,385 above referred to, selecting jacks which have pattern butts I30 opposite the reader arm 150. The lower ends of the jacks which do not have butts opposite the reader arm I50 remain out and these lower ends engage the first jack raising cam H3. The pattern-jacks I36 thus engaged by the jack raising cam II3 raise their pusher jacks upwardly until they are opposite the lower end of the needle raising cam I25 (see Figs. 1 and 13). As the needle cylinder continues -to revolve, the needles thus put into contact with cam I25 are raised to the wrapping level and wrap. When they have taken the yarn their butts contact with the lower side of the said needle lowering cam I26 and move down to a level slightly above the normal level. In the meantime the butts of the pusher jacks have ridden down the slope I3I of the cam ring I30, thus lowering the pattern jack until its resetting butt I38 is just above the second resetting cam II. The lower ends of the pattern jacks are still radially outward and therefore are prepared for the second selection. The jacks which were not raised for wrapping travel at a level which keeps their resetting butts I38 opposite the second resetting cam IN. The pattern jacks 136a having no butts for the second selection will of course remain with their lower ends out and the pattern jacks 1361) having upper butts I25 but no lower butts 126 and which were raised for wrapping will have their lower ends pushed in by the selecting cam I02, but any jacks 1361) which were not selected will have their lower ends remain out. Any pattern jacks I300 having lower butts I26 but no upper butts I25 which were selected for wrapping'will have their lower ends remain radially outward, but if any of those pattern jacks I300 were not selected for wrapping they will not be selected for plating. The pattern jacks 136d, having both butts I25 and I26, will have their lower ends pushed radially inward by the cam I02. Any jacks whose lower ends remain outward after passing the selecting cams I02 and I03 will ride up the second jack raising cam II5, raising their pusher jacks into contact with their needles and raising the needles far enough to take not only the body yarn F but also the plating yarn F plate, after taking the plating yarn coming from the yarn finger F are lowered slightly by the regular top center cam 351 and after taking the body yarn from the finger F are lowered to the knitting point by the usual knocking over cam 360. In the meantime, as soon as the pusher acks raised the needles to the plating level they were drawn down by the surface I32 of the cam ring I30 pushing all pattern jacks downward to the normal level which were not already there, thus bringing the lower ends of those jacks in line with the retracting cam I43 which pushes the lower ends of all jacks radially inward. The pattern jacks remain in this position until on the next revolution they meet the first resetting cam I00. The vertical movements of the reader cam I50 serve to change the selections both on the wrapping and on the plating.

The needles thus raised to If it is desired to stop the patterning in certain I wales, such for instance as when making a patterned instep and a plain sole, the pattern jacks which correspond to the needles knitting the sole have a butt opposite the special selecting cam I60 so that as those butts come in contact with the said cam I60 the lower ends of the jacks are pressed radially inward and thus do not wrap.

It will be noted that by means of this machine the selections for wrapping and the selections for plating are independent of each other. mechanism of this machine makes it possible to float within a wrapped area. Thus the ninth and tenth needles in group R of Fig. 1 and the thirteenth and fourteenth needles are wrapping, while the eleventh and twelfth needles are going to float, thus producing a float inside of a closed wrapped area, i. e., inside of an open embroidered area. This termination of the effect of the wrapping movement before the throat plateis reached in order that additional selections may be made Theindependently, is one important feature of this machine.

Many modifications which do not depart from the scope of my invention will occur to those skilled in the art.

What I claim is:

1. In a circular knitting machine having independent needles and pattern jacks for same,

'means for feeding wrap, body and plating yarns at separate points, in combination with means for selecting jacks and needles vertically for wrapping and then lowering same, and cam means located adjacent the wrapping means adapted ,to select and raise jacks and needles from both wrap and non-wrap jacks and needles to take the plating yarn as well as the main yarn.

2. In a circular knitting machine having independent needles and adapted to wrap pattern yarns around selected needles, the combination of pattern jacks each associated with a needle, cam means adapted to select and raise needles and jacks to wrap, a second cam means adapted to select from all the jacks and raise the selected jacks and needles to take the plating yarn, and a cam adapted to cause all the needles to take the body yarn.

3. In a circular knitting machine having independent needles and adapted to wrap pattern yarns around selected needles, the combination of pattern jacks, a cam to select jacks to raise needles for wrapping, cam means to raise selected jacks and needles and lower them part way,

two cams to select from the wrapping jacks and the non-wrapping jacks respectively for plating, and a cam to cause all the needles to take the body yarn.

pendent needles, means adapted to select two or more spaced needles and raise same, means to wrap a pattern 'yarn around said raised needles, a plating yarn feed and a body yarn feed, and a cam to lower the wrapped needles below the plating yarn feed, in combination with means for selecting needles from all the needles independently' of previous selections to take the plating feed those needles not selected for plating remaining below the plating feed.

5. In a circular knitting machine having independent needles, means for feeding wrap yarns and means for feeding main and plating yarns, in combination with meansfor selecting needles for wrap yarns, means selecting needles to plate from the wrap and the non-wrap needles, and cam means allowing all needles not so selected to float the plating yarn and-take the main yarn.

6. In a knitting machine having independent needles, yarn guides supplying wrap, facing and backing yarns to 'said needles, means to operate said needles to knit said facing and backing yarns as a plated fabric, means selecting needles to float said facing yarn and knit said wrapping yarn to form a hollow wrap pattern, and means to select needles to float said facing yarn within the limits needle jacks and selecting means therefor to cause selected needles to wrap and leave the jacks of selected needles at a level different from that of the unselected jacks, in combination with ca m means adapted to select from the groups of Jack s at the two levels and from different butt positions at the two levels, jacks whose needles are to take the plating yarn.

9. A circular knitting machine having independent needles, means for feeding wrap yarns and means for feeding main and plating yarns, needle jacks, selecting means for said jacks and cam means to act on selected jacks to raise needles for wrapping and to leave the jacks at a different level from non-selected jacks, in combination with two or more butt positions on the jacks for selection to float the plating yarn, and two cams, one to act on one or more of said butt positions on the wrapping jacks, and the other to act on the remaining butt position or positions of the non-wrapping jacks.

10. A circular knitting machine'having independent needles, means for feeding wrap yarns and means for feeding main and plating yarns and needle jacks, in combination with means therefor adapted to select needles for wrapping and leave the jacks of selected needles at a different level from the unselected jacks, and cams adapted to select for plating from the wrapping jacks and the unselected jacks independently of each other.

11. A circular knitting machine having independent needles, means for feeding wrap yarns and means for feeding main and plating yarns and needle jacks, in combination with means therefor adapted to select needles for wrapping and leave the jacks of selected needles at a different level from the unselected jacks, and cams adapted to select for plating from the wrapping jacks and the unselected jacks independently of each other and independently of the wrapping selection.

12. A circular knitting machine having independent needles, means for feeding wrap yarns and main and plating yarns, in combination with independent jacks for raising said needles, selecting means for said jacks, cam means acting on selected jacks to cause needles to be raised for wrapping, and a second cam means adapted to select from the jacks of both the wrapping and non-wrapping needles those jacks which are to cause floating of the plating yarn.

13. A circular knitting machine having independent needles, means for feeding wrap yarns and main and plating yarns, independent jacks for raising said needles, and selecting meansfor said jacks, in combination with cam means to act on selected jacks to cause needles to be raised for wrapping, and other cam means acting on the jacks while the wrap needles are still above normal height to select from the jacks of both the pendent needles, means for feeding wrap yarns and main and plating yarns, in combination with needle jacks movable radially and vertically, means selecting jacks radially, cam means moving selected jacks vertically to cause wrapping of needles, and other cam means acting on' the jacks radially after the vertical wrapping movement has commenced, adapted to bring out a selection from both the wrapping and nonwrapping jacks for a floating-plating operation.

16. A circular knitting machine having independent needles, means for feeding wrap yarns and main and plating yarns, in combination with needle jacks moving radially and vertically, cam means moving selected jacks vertically to cause wrapping of needles, means selecting jacks radially prior to said cam means, means for raising selected needles to cause a floating-plating operation, and cam means located after the first jack raising means to cause presentation of an independent radial selection of jacks to the second raising means.

17. A circular knitting machine having independent needles, means for feeding wrap yarns and main and plating yarns, independent needle jacks for raising said needles, selecting means for said jacks, a cam for raising selected jacks, cams for raising and lowering for a wrapping operation needles raised by jacks raised by said jack cam, in combination with cam means adapted to act on the jacks while the needle wrapping cams are acting on'the needles, to select jacks independent oi. the wrapping operation for a floating-plating operation.

18. A circular knitting machine having independent needles, means for feeding wrap yarns and main and plating yarns, independent needle jacks for raising said needles, selecting means for said jacks, a cam for raising selected jacks, and cams for raising and lowering for a wrapping operation needles raised by jacks raised by said jack cam, in combination with cam means adapted to act on the jacks while the needle wrapping cams are acting on the needles, to select from both the wrapping and non-wrapping jacks which are to float and which are to take the plating yarn.

HARRY SWINGLEHURST, JR. 

